%0 Journal Article %A V. V. Karachik %T Integral identities on a sphere for normal derivatives of polyharmonic functions %J Sibirskie èlektronnye matematičeskie izvestiâ %D 2017 %P 533-551 %V 14 %I mathdoc %U http://geodesic.mathdoc.fr/item/SEMR_2017_14_a116/ %G ru %F SEMR_2017_14_a116